Finding the Third Proportional to 105,654.38 and 216,168.75

Step by Step Solution

1. Step 1: Write the proportion equation
   105,654.38 : 216,168.75 = 216,168.75 : x
2. Step 2: Convert to fraction form
   105,654.38/216,168.75 = 216,168.75/x
3. Step 3: Cross multiply
   105,654.38x = 216,168.75 × 216,168.75
4. Step 4: Simplify right side
   105,654.38x = 46,728,928,476.56
5. Step 5: Solve for x
   x = 46,728,928,476.56/105,654.38
6. Step 6: Final answer
   x = 442,281.06